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HUTTONIAN THEORY. 199 



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Note x. § 37* 



^/&^ height above the level of the fea at which the 



L marks of aqueous depofition are 710 w found. 



i'j6. We have two methods of determining 

 the minimum of the change which has happen- 

 ed to the relative level of the fea and land ; 

 or for fixing a limit, which the true quantity 

 of that change muft necefiarily exceed. The 

 one is, by obferving to what height the regular 

 llratification of mountains reaches above the 



iprefent level of the fea % the other is, by deter- 

 mining the greatefl height above that level, at 

 which the remains of marine animals are now 



^"^^ found. Of thefe two criterions, the firft feems 

 ate* preferable, as the fad on which it proceeds Is 



inoft general, and lead fubjed to be afFeded by 

 dsii^ accidental caufes, or fuch as have operated fince 

 ; cflfi the formation of the rocks. • The refults of both, 



however, if we are careful to feled the extreme 

 iti cafes, agree more nearly than could have been 



w 



\4- expeded. 



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177. The mountain Rofa, in the Alps, is en- 

 tirely of ftratified rocks, very regularly difpofed, 



I 



y N 4 and 



